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Finding the Fourth Proportional to 193,685.60, 290,431.20 and 88,385.60

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Solution

The fourth proportional to 193,685.60, 290,431.20 and 88,385.60 is: 132,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,685.60 : 290,431.20 = 88,385.60 : x
  2. Step 2: Convert to fraction form
    193,685.60/290,431.20 = 88,385.60/x
  3. Step 3: Cross multiply
    193,685.60x = 290,431.20 × 88,385.60
  4. Step 4: Simplify right side
    193,685.60x = 25,669,935,870.72
  5. Step 5: Solve for x
    x = 25,669,935,870.72/193,685.60
  6. Step 6: Final answer
    x = 132,534.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.